Selected Record (or) multi select records fetch the data in Ax7

FormRun                              formRun = sender.formRun();
FormDataSource                  whsWorkTable_ds = formRun.dataSource(formDataSourceStr(WHSWorkTableListPage,WHSWorkTable)) as FormDataSource; //Form
       
 WHSWorkTable                     rec;     


 for (rec = whsWorkTable_ds.getFirst(true) ? whsWorkTable_ds.getFirst(true) :                      whsWorkTable_ds.cursor();
        rec;
        rec = whsWorkTable_ds.getNext())
        {

         }